Office of Commercialization  Sampled time delay based multi input multi output baseband receiver
Sampled time delay based multi input multi output baseband receiver

Sampled time delay based multi input multi output baseband receiver


Unmet Need: Wideband interference cancellation for wide modulated bandwidth

The announcement on opening mm-wave bands for 5G by the Federal Communications Commission has intensified research in academia and industry on commercial mobile networks using mm-wave multi input multi output (MIMO) supporting wide channel bandwidths. However, as next-generation networks progress towards ultra-dense small cells, the dramatic shortening of inter-cell distances will result in both line-of-sight and non-line of-sight interference channels. While interference mitigation using electronic phased-arrays has been an active research area, the dense small-cell mobile networks with wide modulated bandwidths and higher data rates impose unique challenges to the front-end hardware that has not been addressed. 


The Technology: Wideband spatial interference cancellation using sampled time delay technique

WSU researchers have implemented a wide aperture, high-resolution, true-time-delay technique for addressing wideband spatial interference cancellation in dense networks. Additionally, the technique addresses the beam squint problem in wideband large-scale electronic phased-arrays. This technology will serve the 5G millimeter-wave communication hardware using a small form-factor, precise delays method and very low power consumption compared to state-of-art. The developed technology also includes a method to cancel unwanted co-channel interference that overlap the desired signal completely.



•       Next-generation satellite industry.

•       5G millimeter-wave communication hardware applications.

•       Future ultra-dense small cells for 5G communications.



•       Easy augmentation to existing architecture with minimal power or area penalty.

•       Largest range/resolution for beamforming. 

•       Spatial interference cancellation for 100% overlap of interference with the desired signal.

•       Digitally tunable delay with 5 ps resolution.


Patent Information: